Answer:
the area is 50.24
Step-by-step explanation:
to find the area of a quarter circle, use the formula <u>π x r^2</u>
4
Answer:
(-6, 6).
Step-by-step explanation:
The x-coordinate increases by 2 units and the y-coordinate by 9 units:
That is ( - 8 + 2, -3 + 9)
= (-6, 6).
Answer:
Use the normal distribution if the population standard deviation is known.
Use the student's t distribution when the population standard deviation is unknown.
Explanation:
A mound-shaped distribution refers to the normal distribution.
A good sample size for testing against the normal distribution should be
n >= 30.
The condition for the sample size is satisfied.
However, we are not given the population standard deviation, therefore it is assumed to be unknown.
Therefore the student's t distribution should be used.
Chloe can buy 7 pencil boxes and have 1 dollar left
